In the early morning of January 22, 2011, a new era in high-resolution astronomy began with the successful propagation of a 5-star sodium laser guide star “constellation” in the skies over Cerro ...

Pollux and Castor are two fairly bright stars not far apart on the face of the night sky, prominent on April evenings. These two are considered the “heads” in the constellation, Gemini the Twins. They ...

Probably the most eye-catching object these cold winter evenings lies well up in the southeast sky soon after dark — Jupiter, the largest planet in our solar system. It takes nearly 12 years for ...

Our fanciful constellations, depending on how you picture them, make interesting orientations as the night progresses or the year marches on if you look around the same time on a given clear night.